#### Answer

$(-\infty, 3)$

#### Work Step by Step

The graph is rising from the left up to $x=3$.
Thus, the function is increasing in the interval $(-\infty, 3)$.
Therefore, the largest open interval where the function increases is $(-\infty, 3)$.

Published by
Pearson

ISBN 10:
013421742X

ISBN 13:
978-0-13421-742-0

$(-\infty, 3)$

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